fix: bug fixs for github action generate changelog

[Vedantsahai18]

Important

Fixes GitHub Action workflow for changelog generation by correcting PR data handling and improving configuration.

• Workflow Configuration:
  • Renames workflow from Julep-Changelog-Generation to Julep Changelog Generation in generate-changelog.yml.
  • Adds run-name to display the actor generating the changelog.
  • Removes unnecessary empty object from workflow_dispatch trigger.
• Data Handling:
  • Changes how PR data is written to pr_data.json in generate-changelog.yml to avoid JSON structure.
  • Updates generate_changelog.py to read raw string data from pr_data.json instead of JSON object.

^{This description was created by for 4ba5a7e. It will automatically update as commits are pushed.}

[ellipsis-dev]

❌ Changes requested. Reviewed everything up to 4ba5a7e in 33 seconds

More details

• Looked at 38 lines of code in 2 files
• Skipped 0 files when reviewing.
• Skipped posting 0 drafted comments based on config settings.

Workflow ID: wflow_t160GCkHPz2bmabz

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